======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '178'
                                          'artist'  'The Velvet Underground'
                                     'text_people'  ''
                                         'release'  'Loaded'
                                           'title'  'Head Held High'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative', 'classic rock', 'proto punk', 'psychedelic', 'rock']"
                                     'discogstags'  "['rock', 'art rock', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic;rock-cppex;rock-cppex-psychedelic'
                                             'bpm'  '134.9'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Loaded'
'TBPM' (BPM (beats per minute))                     '134.9'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'rock-cppex', 'rock-cppex-psychedelic']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Head Held High'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Velvet Underground'
'TRCK' (Track number/Position in set)               '06'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'art rock', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['alternative', 'classic rock', 'proto punk', 'psychedelic', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.23 dB'
'TXXX:replaygain_track_peak'                        '0.677436'

========================== row from database ==========================
                                              'id'  1414184
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Velvet Underground - Velvet Underground/Loaded/06 - velvet underground - head held high.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  178
                                           'genre'  rock-cppex-classic;rock-cppex;rock-cppex-psychedelic
                                        'filesize'  4293652
                                           'mtime'  1636301326
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 06 velvet underground head held high rock cppex classic;rock cppex;rock cppex psychedelic
                                      'tag_artist'  The Velvet Underground
                                     'tag_release'  Loaded
                                       'tag_title'  Head Held High
                                             'bpm'  134.9
                                    'search_title'  'head':1 'held':2 'high':3
                                   'search_artist'  'the':1 'underground':3 'velvet':2
                                  'search_release'  'loaded':1
                                     'search_rest'  'classic':9,11 'classicprogpsy':1 'cppex':8,13,15 'head':4 'held':5 'high':6 'psychedelic':17 'rock':7,10,12,14,16 'underground':3 'velvet':2
                                    'search_combo'  'classic':16,18 'classicprogpsy':8 'cppex':15,20,22 'head':1A,11 'held':2A,12 'high':3A,13 'loaded':7C 'psychedelic':24 'rock':14,17,19,21,23 'the':4B 'underground':6B,10 'velvet':5B,9
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'classic rock', 'proto punk', 'psychedelic', 'rock']
                                        'tag_date'  1970
                                     'discogstags'  ['rock', 'art rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1636301325.5766208  (2021-11-07 17:08:45)
                             'size'  4293652